4/20/67 IDENTIFICATION OF MATERIAL “X”
The sample of material “X” submitted by L. Corbin has a metallic luster,
a light grey color with
The results of the analysis described below indicate that material
“X” is ferro-chromium, a cast The results of the analysis are compared to the published properties of ferro-chromium: |
TEST | FERRO-CHROMIUM | MATERIAL "X" (approx 12 gms.) | ||||||||
1. | Density | 7.35 to 7.40, depending on | 7.54 | |||||||
(in grams per | composition | |||||||||
cubic centi- | ||||||||||
meter) | ||||||||||
2. | Composition | major elements: | major elements: | |||||||
Chromium (up to 70%) | Chromium | |||||||||
Iron (up to 30%) | Iron | |||||||||
minor and trace elements: | minor elements: | |||||||||
Information not available | Nickel | |||||||||
but probably contains many | Calcium | |||||||||
elements as impurities | Silicon | |||||||||
Cobalt | ||||||||||
Vanadium | ||||||||||
trace elements: | ||||||||||
Aluminum | ||||||||||
Zirconium | ||||||||||
Titanium | ||||||||||
Copper | ||||||||||
Molybdenum | ||||||||||
Magnesium | ||||||||||
3. | Fusion (melt- | approx. 2350° to 2500° F., | approx. 2500° F, by gas | |||||||
ing) point | depending on composition | torch test | ||||||||
4. | Magnetic | slight | slight | |||||||
5. | Radioactive | no | no | |||||||
6. | Appearance | cast grain structure | cast grain structure, | |||||||
(should fracture in a brittle | fractures in a brittle | |||||||||
manner, none available to test) | manner |
|
|